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Report generated at 2021-03-19 03:00:25

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	88585130	120326326
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	87287561	115169165
Mapped(QC-failed)	0	0
% Mapped	98.5400	95.7100
Paired	88585130	120326326
Paired(QC-failed)	0	0
Read1	44292565	60163163
Read1(QC-failed)	0	0
Read2	44292565	60163163
Read2(QC-failed)	0	0
Properly Paired	81214615	99959048
Properly Paired(QC-failed)	0	0
% Properly Paired	91.6800	83.0700
With itself	86741059	113514451
With itself(QC-failed)	0	0
Singletons	546502	1654714
Singletons(QC-failed)	0	0
% Singleton	0.6200	1.3800
Diff. Chroms	4511058	8596702
Diff. Chroms (QC-failed)	0	0

Marking duplicates (filtered BAM)

Filtered out (samtools view -F 1804):

read unmapped (0x4)
mate unmapped (0x8)
not primary alignment (0x100)
read fails platform/vendor quality checks (0x200)
read is PCR or optical duplicate (0x400)

	rep1	ctl1
Unpaired Reads	0	0
Paired Reads	37207222	44206103
Unmapped Reads	0	0
Unpaired Dupes	0	0
Paired Dupes	472681	461681
Paired Opt. Dupes	1778	1289
% Dupes/100	0.0127	0.0104

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Read Pairs	37188853	44178985
Distinct Read Pairs	36717585	43721013
One Read Pair	36254730	43278165
Two Read Pairs	455359	434626
NRF = Distinct/Total	0.9873	0.9896
PBC1 = OnePair/Distinct	0.9874	0.9899
PBC2 = OnePair/TwoPair	79.6179	99.5756

Mitochondrial reads are filtered out.

NRF (non redundant fraction)
PBC1 (PCR Bottleneck coefficient 1)
PBC2 (PCR Bottleneck coefficient 2)
PBC1 is the primary measure. Provisionally

0-0.5 is severe bottlenecking
0.5-0.8 is moderate bottlenecking
0.8-0.9 is mild bottlenecking
0.9-1.0 is no bottlenecking

Flagstat (filtered/deduped BAM)

Filtered and duplicates removed

	rep1	ctl1
Total	73469082	87488844
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	73469082	87488844
Mapped(QC-failed)	0	0
% Mapped	100.0000	100.0000
Paired	73469082	87488844
Paired(QC-failed)	0	0
Read1	36734541	43744422
Read1(QC-failed)	0	0
Read2	36734541	43744422
Read2(QC-failed)	0	0
Properly Paired	73469082	87488844
Properly Paired(QC-failed)	0	0
% Properly Paired	100.0000	100.0000
With itself	73469082	87488844
With itself(QC-failed)	0	0
Singletons	0	0
Singletons(QC-failed)	0	0
% Singleton	0.0000	0.0000
Diff. Chroms	0	0
Diff. Chroms (QC-failed)	0	0

Peak calling

Reproducibility QC and peak detection statistics

The number of peaks is capped at 300K for peak-caller MACS2

	overlap
Nt	0
N1	191077
Np	0
N optimal	191077
N conservative	191077
Optimal Set	rep1-pr
Conservative Set	rep1-pr
Rescue Ratio	0.0000
Self Consistency Ratio	1.0000
Reproducibility	pass

Overlapping peaks

N1: Replicate 1 self-consistent overlapping peaks (comparing two pseudoreplicates generated by subsampling Rep1 reads)
N2: Replicate 2 self-consistent overlapping peaks (comparing two pseudoreplicates generated by subsampling Rep2 reads)
Nt: True Replicate consisten overlapping peaks (comparing true replicates Rep1 vs Rep2 )
Np: Pooled-pseudoreplicate consistent overlapping peaks (comparing two pseudoreplicates generated by subsampling pooled reads from Rep1 and Rep2 )
Self-consistency Ratio: max(N1,N2) / min (N1,N2)
Rescue Ratio: max(Np,Nt) / min (Np,Nt)
Reproducibility Test: If Self-consistency Ratio >2 AND Rescue Ratio > 2, then 'Fail' else 'Pass'

Enrichment

Strand cross-correlation measures

Performed on subsampled reads (15M)

	rep1
Reads	15000000
Est. Fragment Len.	150
Corr. Est. Fragment Len.	0.1762
Phantom Peak	45
Corr. Phantom Peak	0.1743
Argmin. Corr.	1500
Min. Corr.	0.1688
NSC	1.0439
RSC	1.3481

NOTE1: For SE datasets, reads from replicates are randomly subsampled.
NOTE2: For PE datasets, the first end of each read-pair is selected and the reads are then randomly subsampled.

Normalized strand cross-correlation coefficient (NSC) = col9 in outFile
Relative strand cross-correlation coefficient (RSC) = col10 in outFile
Estimated fragment length = col3 in outFile, take the top value

Fraction of reads in overlapping peaks

	rep1-pr
Fraction of Reads in Peak	0.2580

ppr: Overlapping peaks comparing pooled pseudo replicates
rep1-pr: Overlapping peaks comparing pseudoreplicates from replicate 1
rep2-pr: Overlapping peaks comparing pseudoreplicates from replicate 2
repi-repj: Overlapping peaks comparing true replicates (rep i vs. rep j)

Other quality metrics

Fingerprint and Jensen-Shannon distance

	rep1
% genome enriched	0.2417
AUC	0.4953
CHANCE divergence	0.1098
Elbow Point	0.0000
JS Distance	0.6735
Synthetic AUC	0.4964
Synthetic Elbow Point	0.1770
Synthetic JS Distance	0.3383